来自《耶鲁大学开放课程：基础物理 第17集 第17集》

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  from your position,
  冲了出去
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  you come down to 0 and you stay there.
  你回到 0 点并保持在那个位置
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  That's the ideal situation for damping.
  这是减震的理想状况
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  All right.
  好了
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  So, I'm going to the last topic in oscillation
  我接下去要讲振子的最后一个问题
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  but is there anything that you need clarification?
  在此之前你们还有什么地方需要解释吗
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  Yes?
  说吧
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  Ah, yes.
  对的
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  So, when γ/2=ω0,
  当 γ/2=ω0 时
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  this thing vanishes,
  这一项等于零
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  and you seem to have only one solution,
  看上去你只有一个解
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  You don't have the plus or minus, right.
  不必加减